Flora of North America species comparison

never tuberous.

never tuberous.

erect, never rooting nodally, strigose or hirsute, base bulbous and cormlike.

erect, never rooting nodally, hispid, base not bulbous.

blades ovate to cordate in outline, 3-foliolate, rarely merely deeply divided, 2–5.3 × 2.4–5.4 cm, leaflets 1–2x-lobed, ultimate segments oblong to obovate, margins toothed, apex rounded in outline.

blades broadly cordate in outline, 3-foliolate, 1.6-7 × 3-9 cm, leaflets cleft, usually deeply so, ultimate segments narrowly elliptic, margins toothed, apex acute.

receptacle pubescent;

sepals reflexed 2–3 mm above base, 6–9 × 2–4 mm, pilose;

petals 5, yellow, 9–13 × 8–11 mm.

receptacle hirsute;

sepals reflexed ca. 1 mm above base, 3-5 × 1.5-2 mm, ± hispid;

petals 5, yellow, 2-4 × 1-2.5 mm.

ovoid, 6–9 × 5–7 mm;

achenes 2.2–3.2 × 2.2–2.8 mm, glabrous, margin forming narrow rib 0.1–0.2 mm wide;

beak persistent, lanceolate to deltate, 0.2–0.8 mm, slender tip hooked when present.

cylindric, 9-12 × 5-7 mm;

achenes 1.8-2.8 × 1.6-2 mm, glabrous, margin forming narrow rib 0.1-0.2 mm wide;

beak persistent, broadly lanceolate or nearly deltate, straight or nearly so, 0.6-0.8 mm.

= 16.